Radoslaw, I work for IntelliMagic and use our Vision tool to produce the charts. The information is available in RMF (FCD record 74.7) but you will probably have to turn on the data creation on your switches first.
Actually, the most important data that you should be looking at here is the frame pacing count (you want that to be 0) and the Error count. I don't know the configuration of the data that I am looking at but I would guess that only a portion of the data is going via the ISL. If I look at the total receive/transmit rates for all the directors, the ISLs are definitely doing less. John >John >First, I'd like to thank you for the information, I appreciate it. > >I also have some further questions: >1. How do you measure frame sizez? What tool/monitor you use? > >2. Why ISL traffic is more disperse - that means - different? >Assuming he ISL is not used for any other traffic but FICON, it should >contain exactly the same frames + very small amount of control >information. Switch does not rebuild frames. That's theory ;-) Probably >you said about practice, measured values. > >Regards >-- >Radoslaw Skorupka >Lodz, Poland > > >John Ticic pisze: >> Hello Radoslaw, >> >> I'm not sure I can help but here is some information that may be useful. >> >> I typically see different average transmit and receive frame sizes during >> the day (on-line) compared to the evening (batch). I've seen down to >> 1000 bytes during on-line and around 1700 bytes during batch for DASD. >> I haven't actually looked only at tape but would expect the average to >> be higher and consistent. >> >> The ISL average sizes seem to be even more disperse. >> >> John. >> >> On Wed, 23 Mar 2011 09:05:51 +0100, R.S. >> <r.skoru...@bremultibank.com.pl> wrote: >> >>> What is typical FC frame size in FICON environment? >>> I guess there are two different answers - one for disk, the second for >>> tape. >>> >>> >>> Background: I would like to estimate number of BB credits needed for >> ISL >>> between two FICON switches. >>> >>> -- >>> Radoslaw Skorupka >>> Lodz, Poland ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
